maps

1. DIY Cartography
Tudor Pavel
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2. What you need
A poorly made drawing of a parking
GIMP Image Editor
A little patience (Twelve-step program*)
* http://en.wikipedia.org/wiki/Twelve-step_program
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3. The poorly made drawing of
Piata Marasti parking
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4. To overlay the image on the
map, you need:
The image (doh!), but parking rotated with
North up
Its width (in mm)
Its height (in mm)
Its scale (1:x)
Coordinates of image center (LatLng)
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5. Step 1: Screenshot Google Maps
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6. Step 2-1: Select measure tool
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7. Step 2-2: Measure angle (65)
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8. Step 3: Import drawing
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9. Step 4-1: Select rotate tool
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10. Step 4-2: Rotate drawing
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11. Step 5-1: Use scale tool
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12. Step 5-2: And move tool
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13. Step 5-3: Scale and Move
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14. Step 6: Guides for Image Center
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15. Step 7: Get Image Center
coordinates
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16. Shopping list update
The image (doh!), but parking rotated with
North up
Its width (in mm)
Its height (in mm)
Its scale (1:x)
Coordinates of image center (LatLng) ->
(46.776649, 23.611951)
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17. Step 8-1: Use fuzzy select tool
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18. Step 8-2: Select unnecessary
whiteness
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19. Step 8-3: And clean it up
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20. Step 8-4: Export it
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21. Shopping list update
The image (doh!), but parking rotated with
North up
Its width (in mm)
Its height (in mm)
Its scale (1:x)
Coordinates of image center (LatLng) ->
(46.776649, 23.611951)
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22. Step 9-1: Go to scale image
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23. Step 9-2: Change to mm to get
width+height
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24. Shopping list update
The image (doh!), but parking rotated with
North up
Its width (in mm) -> 263 mm
Its height (in mm) -> 228 mm
Its scale (1:x)
Coordinates of image center (LatLng) ->
(46.776649, 23.611951)
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25. Step 10-1: Measure wall in image
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26. Step 10-2: Measure wall in real life
with coordinates of the building
corners
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27. Calculate image scale
44790(mm) / 149(mm) = 300.6
=~ 1:300
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28. Shopping list done
The image (doh!), but parking rotated with
North up
Its width (in mm) -> 263 mm
Its height (in mm) -> 228 mm
Its scale (1:x) -> 300
Coordinates of image center (LatLng) ->
(46.776649, 23.611951)
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29. Step 11: Upload
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30. Step 12: Cigar
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